// JavaScript Document\
function popwindow(url, height, width, returnvalue)
{
	try{
		if (!height) height=550;
		if (!width)  width=430;
			var newwindow;
			var options = 'scrollbars=yes, height='+height+',width='+width+', left=100, top=40'
			newwindow=window.open(url,null,options);
			if (window.focus) {newwindow.focus()}
			return returnvalue
		}
	catch(e){
		return true;
	}
}